<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>分割数组</title>
</head>
<body>
  <script>
    function fn(nums) {
      let str = 0
      let left = nums[0]
      let right = nums[0]
      for (let j = 1; j < nums.length; j++) {
        right = Math.max(right, nums[j])
        if (nums[j] > left) {
          str = j
          left = right
        }
      }
      return str
    }
    console.log(fn([5,0,3,8,6]))
  </script>
</body>
</html>